3.3. Seasonal dynamics of phytoplankton
community
The average phytoplankton abundance was 4 106 cells l
1
and the highest values were registered in spring (Fig. 2) and
lowest values were registered in winter 2012. There was a
high variability in cell abundance when the temporal distribution
of phytoplankton groups was examined. Generally,
diatoms registered the highest values in winter 2012, autumn
and winter 2013. Pyrrophyta abundance was in summer,
while Chlorophyta and Cyanophyta cell densities were usually
lower than 1% of the total density.